<h2 class="header">
<div>
    <%if(username){%>
        <a href="/users/relogin" class="style-btn">退出</a><a href="#" class="style-btn wenzhang" >发布文章</a>
        <a href="#" class="style-btn Admintorlogin" >管理员登录</a>
        <%}else{ %>
        <a href="/users/login" class="style-btn">登录</a><a href="/users/register" class="style-btn">注册</a> 
        <%}%> 
</div> 
<h2>
